A Kosten vs Shirov, 1989 (B23) Sicilian, Closed, 22 moves, 1/2-1/2 White busted: f4 pawn blocks bishop A Bennett vs Dzindzichashvili, 1993 (B23) Sicilian, Closed, 40 moves, 0-1 5.Bc4 without f5 G Zimmermann vs Negi, 2005  (B23) Sicilian, Closed, 37 moves, 0-1 5. Bc4 6. f5 V Flaming vs V Belikov, 2005 (B23) Sicilian, Closed, 30 moves, 0-1 Main line 5. Bc5 6.f5 T Wedberg vs Kharlov, 1992 (B23) Sicilian, Closed, 39 moves, 0-1 5.Bc4 mainline. but 15. Kc8 was better O B Vea vs S McGrane, 2006 (B23) Sicilian, Closed, 56 moves, 0-1 6 games